I am not saying it doesn't happen, I am asking exactly what the figures mean.
If one in six boys and one in four girls has been subjected to sexual abuse aimed personally at them, physically assaulted or made to contribute some other way to someone's fantasies, then it is an epidemic. The only sure way to counter that is to put bromide into the drinking water the same way as fluoride is added to protect the nation's teeth.
If they are counting in some proportion who have at some time unexpectedly been shown a penis/phallus by a flasher, without having to engage with it/him in any other way, then it is still a serious matter, but not one which demands that we demonise all fathers, uncles, brothers, grandfathers, teachers, doctors, dentists, sports coaches, and are suspicious of all mothers, aunties, sisters, grandmothers, nurses, playgroup leaders, ballet teachers, swimming instructors, the lot.